This is a bunch of hokum. At 4:19 they show how a cat sees – fuzzy, blurry, no colors. My cat can clearly see a crow sitting on top of a building 150 ft. away. The crow is not moving, but she sits there and meows at it. She can also see a housefly on the wall 15 feet away. The fly is not moving. She can see things I can't see. Don't believe them when they show you what an animal sees. They really have no idea. Flies don't see "in a mosaic effect." Their compound eyes combine the visual input into a single image in their brain.

Why is he saying butterflies need to see polon? They don't, they drink nectar thats all they want. Polon just gets transported to other flowers. They dont ear just drink. They stopped eating once they transformed into butterflies.